Mechanism for pinking fabric or the like



Sept. I, 1936 G. M. HOSKWITH MECHANISM FOR PINKING FABRIC OR THE LIKE Filed Sept. 4, 1935 4 Sheets-Sheet 1' A TTORNEY S.

Se t; '1, 1936.

G. M. HOSKWITH MECHANISM FOR PINKING FABRIC OR THE LIKE v4 Sheets- Sheet 2 Filed Se t. 4, 1935 J III! I 77v MZQ BY Warm ATTORNEYS.

mmlllllfiW Sept. I, 1936.

G. M. HOSKWITH MECHANISM FOR PINKING FABRIC OR THE LIKE Filed Sept. 4, 1935 4 Sheets-Sheet 3 A TTORNEYS.

Sept. 1, 1936;

G. M. HOSKWITH 2,052,630

MECHANISM FOR PINKING FABRIC OR THE LIKE 11 M .51 l 27 15 fl t v 16 11 i I H 400 L Ill l [I 15 35 15 I I 116 H l M I 'l I 14 14 i 117 h I I J8 10 i I z I H 7 i:- \y I I I l I vl f a5 I 10 7 .36 51 Filed Sept. 4, 1935 4 Sheets-Sheet 4 Fig: 15

INVENTOR. Qoqye IYZJKQsku/JIIY BY ATTORNEYS Patented I Sept. 1 1936 UNITED STATES PATENT MOFFICE MECHANISM FOR PINKIL FABRIC OR THE LIKE George M. Hoskwltli, Brooklyn, N. Y. Application September 4, 1935, Serial in. 39,081

Another object of my invention is to provide an improved pinking knife.

Another object of my invention is to provide a device whereby a suitable relative movement is produced between said pinking machine, and the layersof fabric which are to be pinked. I prefer to keep the layers of fabric stationary, and to move said pinking machine relative to said layers of fabric. However, it would not be departing from the invention if the pinking machine should be maintained stationary and the I layers were moved relative to the cutting mechanism. I

Another object of my invention is to provide a 'mechanism whereby a suitable co-ordinated intermittent movement is produced between the carriage. of the pinking machine and the layers of fabric. 1

This application is in part a continuation of my application, Serial No. 24,817, filed June 4, 1935, for Mechanism for pinking fabric and the like. I

Another object of my invention is. to provide a suitable automatic co-ordinated intermittent movement between said cutting mechanism which is mounted on the carriage and the layers of fabric, whereby successive pinking cuts may be formed in any desired relation. For example.

successive pinking cuts may be caused to overlap. Another object of my invention is to provide a simple, portable and compact mechanism of the type above described.

Another object of my invention is to provide a illustrate a preferred embodimentthereoi, it being understood that the above-general statement of the objects of my invention is intended to generally illustrate the same, and without limiting it in anymanner.

Fig. 1 is a perspective rear view, showing a plurality of layers of fabric, on a cutting table, and the mechanism in operative position.

-- reclaims. (01. 164-75) Fig. 2 is an elevation of the mechanism, taken at the left hand side of Fig. 1.

Fig. 3 is a horizontal sectional view on the line 3-3 of Fig.2.

Fig. 4 'is a horizontal sectional view on the line 4-4 of Fig. 2.

Fig. 5, is a vertical sectional view on the line 55 of Fig. 2.

Fig. 6 is a horizontal sectional view on the line s-s of Fig. 2.

r Fig. 7 is a vertical sectional view on the line 1 1 of Fig. 5. I

Fig. 8 is a fragmentary vertical sectional view, on the line 8-4 of Fig. 6.

Fig. 9 is a fragmentary vertical. sectional view on the line 9-9 of Fig. 3.

Fig. 10 is a horizontal sectional view on the line 10-40 of Fig. 5.

Fig. 11 is a fragmentary enlarged vertical section in the line ll-Il of Fig. 4.

Fig. 12 is a vertical sectional view illustrating drive mechanism, the other embodiments of which are illustrated in Fig. 3 and in Fig. 16.

V Fig. 19 is a sectional view on the line l9-l9 of Fig. 18. Y

While I have shown the device as used for pinking a series of superposed layers of fabric F, the mechanism can be used for pinking a single layer.

The fabric or other material which is to be pinked, has-already been cut to pattern and is located upon the same cutting table or support upon which it has been cut. This table or support is not shown. The pinking mechanism is mounted upon a movable base I, which is supported on and moved relative to said table. Referring to Fig. 1, it is assumed that the mechanism moves to the right and in the direction of the arrow.

Referring to Fig. 3 it is assumed the mechanism is mo ing to. the left.

The base I is mounted upon any suitable num ber of rollers. I have illustrated a pair of rear rollers 2 and 2a which are connected to the base I by means of any suitable stud shafts. 'Ilie' rollers 2 and 2a are ,ldlers- The base I is proe.

vided with a member 35, which is tumably connected to said base by hinge pin 36. The upper bottom Smalle or the layers of fabric, in order to elevate the edge portion of the fabric which'is I to be pinke'd.

The base is actuated by means of a pair of wheels or rollers 4 and 4a, which are keyedl to a shaft 3. Said wheels or. rollers 4 and 4a can be made of resilient material, or they may have their outer faces madeof resilient rubber or other suitable material, in order to secure positive traction between the base I and the cutting table. The outer surfaces of said wheels 4 and4a may be knurled or roughened in any suitable manner in order to get positive traction upon the table or other support, upon which the fabric is located.

As shown in Figs. 2 and 3, the shaft 3 is provided with a ratchet wheel 5, which is keyed to shaft 3.

Said ratchet wheel 5, together with the shaft 3,

are turned intermittently by means of a pawl 6,

which is pivotally connectedby means of a pin 8,-

to the end'oi a reciprocating rod 9. As shown in Fig. 3, the pawl 6, is provided with the usual spring I, in order to maintain the edge of said pawl I in engagement with the teeth of the ratchet5. There may be aplurality' of interchangeable ratchets such as element 5 and each can have any desired number of teeth.

Referring to Fig. 3, the rod 9 is slidably mounte ed in a bearing cap I0, and in housing H. Bearing cap I is screwed into a suitable socket which is provided in the housing H. A coil spring II has one end abutting the adjacent wall of the cap III, and the other end of said spring I I abuts an enlargement of the rod 9. At its inner end the rod 9 is forked and it is provided with a roller I2, and the spring ll maintains the roller I2 in' engagement withthe outer face of a cam I4, which is shown in detail in Fig. 9.

The cam I4 is mounted upon a shaft I As shown in Fig. .3, the shaft I5 is mounted in suitable anti-friction bearings 2| andZIa.

As shown in the upper part of Fig. 3, the antifriction bearing at one end of'the shaft is mounted in an adjustable bushing 23, which is screwed into adjusted position, in the threaded socket of the bushing 24, which is fastened to the wall of the housing H by means of removable screws 25. The adjustable bushing 21'I'makes it possible to take up any wear upon the anti-friction bearings 2| and 2Ia. A cap 22 can be screwed into position upon the bushing 23, in order to seal the anti-friction bearings against dirt and the like from the outside, and to seal the'lubricant in the gear and cam chamber 42.

The shaft I5 is provided with a worm gear I6,

which meshes with a worm II, which is mounted upon a vertical shaft I8. As shown in Fig.5, the shaft I8 is the shaft of a motor M, which'may be any suitable type of electric motor.- The outer or upper end of shaft I8 is also provided with a knurled head I9, whereby said shaft I8 may be manually actuated while the motor is'idle. This hand actuation makes it possible to adjust the" operating mechanism of the machine accurately Referring to Figs. 3 and 5 it will be noted that gears I6 and II, the lower bearing of shaft I8, and both bearings of shaft I5, also cam I4 and roller I2 arelocated in the lower part of housing H, which forms a compartment 42-in'which lubrieating oil or the like can be located.

Referring to Fig.5, the shaft I5 is provided with an end-member 26, which serves as a crank, and also acts as a cam at its periphery.

As shown in Fig. 5, a connecting rod or link 21 is turnably connected to the member 26, by means of a crank pin 3 l. At its upper end, the connecting rod or link 21 is provided with the usual wrist pin 28, which is connected to a cross-head 29. Said crosshead 29 is slidably guided} for verical movement, by means of rails 30, which I position, by means of a cl'amping'member 33'.

Said knifeK reciprocates vertically in a bushing 48, which is located and held within a suitable opening' of the wall of the housing H.

The stroke of the knife is indicated in dotted lines in Fig. 5. The lower end of said knife K reciprocates'through the throat-plate 34, which has a suitable triangular contour, for cooperating with the planar cutting faces of knife K.

The reciprocations of the knife K, synchronized with intermittent movements of the base I, produce a series of pinking cutsin the layers of fabric F, as illustrated in Fig. 1. Y

The base I is maintained stationary while the knife K is performing the cutting stroke, and

the base I is advanced while the knife K is out of its operative position relative to the throatplate 34 and the fabric- F. The intermittent movement of base I may be of any length, equal to, less than, or even greater than the length of a pinking cut.

The movement of'the base I can be regulated by the use of different diameter ratchets 5, with a greater or smaller number of teeth, so'that any desired relation can be secured between succespurpose, I provide a vertically movable presserfoot 31, which is shown in Fig. 5. Referring to Fig. -5 and also to Fig. 11, the presser-foot 31 is connected to a vertically slidable rod 38, having I a head 38d.

Said rod 38 slides in-a bearing 38b. The bearing 38b, together with sleeve 4| is slidably mounted in a suitable bearing which is provided in the housing H. A coil spring 39 is located between the head 38a, and the head 40a of the rod 48, which is slidably mounted in the upper end of sleeve 4I. Y I

Hence, the spring 39 provides for a certain resilient play between the rod members 40 and 38, and therefore puts as much pressure as is necessary on the fabric.

aosaeso The rod 40 is slidably connected with clamp 40b which is pivotally connected to a rocker link 43, which is pivotally mounted at 44 to the housing H.

' abuts the cam surface of the crank member 26,

as shown in Fig. 7.

. Hence the .crank and cam member 26 operates to reciprocate the pinking cutting knife K and through its cam surface, to downwardly 'move the i presser-foot 31 and to positively clamp the layers of fabric, immediately before and during each ,downwardstroke of the pinking cutter K, and

also while the cutting knife is moved upwardly until it loses contact with the layers of fabric.

The position of the presser-foot 31 in relation to the total thickness of fabric is adjustable for various thickness by means of adjustable screw of clamp 40b which clamps rod 40 in any position.

Mechanism is provided for removing the pieces of loose fabric which are cut out of the edges of the layers F and fall upon the base I adjacent the throat plate.

The knife K consists essentially of two walls which are inclined to each other, and which are provided with a cutting edge at the lower end of each wall. The converging inner and outer surfaces of the walls'of the knifeK are smooth and polished.

As the knife K is forced through the layers of fabric, a number of superposed triangular pieces of fabric are cut out of the edges of layers F.

The cutting knife may have any shape, and cut pieces of cloth of any shape.

Since'the inner verticals of the knife are very smooth, the pieces of cut or waste fabric will fall out of the knife, and they will fall upon the base I, adjacent the throat plate.

I provide a. suction duct 5|, by providing a member 50, which is slidably or adjustably mounted upon an extension of the housing H.

The planar wall of the member 50 which is near the knife K, serves also as a guide for the depth of cut on edges of the layers of fabric F to be pinked.

Suction is produced by means of a suction and exhaust fan 56, which is mounted directly upon the motor shaft I8 which turns at high speed.

As shown in Fig. 6, the fan 56 expels the air from its casing, through an outlet 52.

The pieces of waste material are therefore ejected through said opening 52, into any suitable receptacle or on the table upon which the super- .posed layers of fabric F are supported. The motor M is provided with the usual electrical connector 53, which is located on'the outside of the housing H;

The entire device is also provided with a handle 54, at which is located the electric operating merit of.the base I in a straight line, or in aline of any contour, regular or irregular. Likewise, while I have illustrated the cutting of straight edges of layers of fabric F, I do not wish to be limited thereto, because the base I could be guided so as to move in any suitable path, regular orirregular, and this could be accomplished by the use of the handle 54. I

The longitudinal contour of the cutting edges of the knife K is preferably curved and concave, viewed from the bottom of said knife, so as to improve the cutting and to'prevent the knife from holding the cut pieces of material. At the cutting point of the knife K, the cutting edges make a very small angle with the vertical axis, in

order to hold the layers of material while the remaining portions of the cutting edges perform the shearing operation.

I can therefore make. the pinking-cuts, in any desired relation, upon the edges of pieces of fabric which have any contour.

The embodiments shown in Figs. 1 to 11 inclusive, may result in inaccurate work, if the. machine is operated carelessly, inthat the machine may be pushed too rapidlyby'the operator so as to unevenly space the pinking cuts. In such case, the ratchet 5' may overrun the pawl 5, due to excessive push on handle 54, in the direction of the arrow shown in Fig. 1.

According to the embodiments shown in whereby the pinking cuts will be-evenly spaced so that they will be either directly adjacent each other as shown in Fig. 1, orsaid 'cuts can be spaced in any other desired even relationship.

In the embodiment shown in Fig. 12, the shaft I5 is located above the motor M. Otherwise the drive of the mechanism is generally the same as that illustrated in Fig. 5. The arrangement 11- lustrated in Fig. 12 permits the more ready assembly of the machine. because the essential parts of the drive are located more accessibly above the motor M.

I In the embodiment shown in Fig. 12,'the con- Likewise, in the embodiment shown in Figs. 12

and 13, the shaft I5 has a gear I00 keyed thereto, and this gear is of any suitable mutilated type.

In the specific embodiment shown, the gear I00 has a single tooth which meshes with the gear IOI, which is mounted upon a shaft I02. Thev shaft I02 is provided with a bevel gear I03, which meshes with the bevel gear I04,keyed to 30 Figs. *12-19 inclusive, automatic means are provided shaft I05. The shaft I05 is provided with-a bevel ing the intermittent actuations or Said gear ml,

by means .of the single mother the .gear I00.

The gear I may have two or more separated teeth, but the. carriage is automatically held against excessive movementby the intermittent locking of the gear IliI against the gear I00.

Likewise, in the embodiments shown in Figs. 12, 13 and 15, a simpler and more convenient assembly is shown for operating the presser-foot 31. The roller I 08 abuts the cam 26. As shown in Figs. 13 and 15 the roller I08 isconnected to the inner forked end of an arm- I09, which is pivoted in front cover casting I I0. Arm I09 is keyed to the shaft I II whch is turnably mounted in the front cover II I) of-the machine. The shaft III has another arm I I2 keyed thereto and the outer forked end of this arm H2 has a roller H4. As shown in Fig. 13, the roller H4 is located in the horizontal recess or forked head H5, which is adjustably connected by means of a set screw H6, to the rod 38 of the presser-footdl.

A spring H1 is located between the forked presser-foot head H5 and a projecting portion of the front cover I I0, so as to hold the presser-foot 31 in the upper position shown in Fig. 13. whichcorresponds to the upper position shown in Fig. 5.

Fig. 16, which is generally similar to Fig. 3,-

shows a cam Ma, which is mounted on the same shaft I5 as the cam I4. A rod H8 is slidably mounted in the frame of the machine and also in cap Illa. Said rod I I8 is provided with a roller I I9 which abuts the periphery of the cam No. A

spring I20 maintains the roller,I I9 in contact with.

the cam Ma. Therod H8 is reciprocated by the cam Ma. The rod I I8 is provided with a locking pawl I2 I. At the outer end of the rod H8, the locking pawl I-2I is pivotally connected, and this locking pawl is pivoted to the frame of the machine at I25. Hence, when the rod I I8 is pushed outwardly with its roller I IS in the full line position shown in Fig. 17, the pawl I2I engages a gear I22 which is mounted on the shaft 3, thus locking the shaft 3 against movement.

The rods II8 and 9 are restricted by their respective cams I4 and I421, so that the pawl I2I serves to lock the shaft 3, save during the operative movement of the pawl 6 against the ratchet 5.

In the embodiment shown .in Figs. 18 and 19, the main shaft I5 is provided with a gear I23, which may have a single tooth, or a plurality of teeth, this being generally-similar to the gear I00.

The gear I23 intermittently drives a gear I24, and the gear I23 locks the gear I24between the intermittent drive movements as previously explained in connection with the gears I00 and IIII; The shaft of the gear I24 drives the shaft 3 by means of a chain or belt or any-intermediate moving parts, as illustrated in Fig. 19.

For example, whenever I refer to any mechanical movement, it is to be understood that such mechanical movement is merely illustrative, and that it may be replaced by any other suitable mechanical movement. For example, I have shown a pawl-and-ratchet mechanism for intermittently actuating the base I. Obviously there are numerous other types of mechanism for producing this particular intermittent movement. Likewise, while it is extremely convenient and preferable to have the'motor located upon the base I, I do not wish to be limited thereto. Likewise, I have shown traction means 4 and 4a for intermittently moving the base I. I do not wish to be limited to turnable traction means, since it is clear that the base I could be moved intermittently in any desired path, by numerous other devices.

type of pinking mechanism. When I specify. that the cutting knife is mountedfor vertical reciprqcating movement I include any movement" which has a vertical component. The pinking mechanism which is illustrated operates by a shearing action, and the knife K may be considered as being one of a pair of shear-blades.

In certain aspects of my invention, it is notilimited to automatic mechanism for shifting the base, because the base could be shifted by handlntermediate the cutting strokes of the knife. However, I prefer to useautomatic mechanism for shifting the knife, in order to have the pinking cuts in direct succession, as illustrated in Fig. 1, instead of having irregular spacing between the pinking cuts.

I have shown preferred embodiments of my invention but it is clear that numerous changes and emissions can be made without departing from its spirit.

I claim:

1. A pinking device comprising a movable base,

pinking mechanism mounted on said base, said pinking mechanism including means being shaped and operative to cut segments from the edge of the material to be pinked, a motor mounted upon said base and connected to said pinking mechanism to operate the same, mechanism ,for actuating saidbase intermittently, said actuating mechanism being connected to said motor so that the base is actuated between successive pinking operations. r

2. A pinking device comprising a movable base,

pinking mechanism mounted on said base, a motor mounted upon said base, said pinking mechanism comprising a cutting knife which is guided to reciprocate in a vertical path, means connecting said motor to said cutting knife in order to vertically reciprocate the same, intermittently operating mechanism for actuating said base,

and means connecting said intermittently operating mechanism to said motor for actuating said base between the cutting strokes of said knife.

3. A pinking device comprising a movable base.

pinking mechanism mounted on said movable base, said movable base having traction means for moving the same, a motor mounted on said base, speed-reduction mechanism connected. to

the shaft of said motor and adapted to drive an perform a pinking out between the intermittent movements of said base.. I

- 4. A pinking device comprising a movable base,

pinking mechanism mounted on said base, means adapted to move said base intermittently, means adapted to operate said pinking mechanism-between intermittentinovements of said base, a

presser-foot mounted .on said base, means adapted to actuate said presser-foot into operative position while the base is stationary and prior to the cutting movement of said pinking mechanism, and to hold said presser-foot in said operative position during said cutting movement.

5. A pinking devicecomprising a movable base, a motor mounted on said base, said base having traction means adapted to actuate the same,

intermittently operated mechanism mounted on said base operated by said motor and operating said traction means, intermittently operated pinking mechanism actuated by said motorto pink the fabric while said base is stationary, said pinking mechanism being mounted on said base, apresser-foot mounted on said base for vertical reciprocating movement, and mechanism operated by said motor and adapted to reciprocate said presser-foot so that the presser-foot is forced into operative position before the pinking cut is started.

6. A pinking device comprising a. movable base, said base having turnable traction means for moving the same, a motor mounted on said base. an intermediate shaft mounted on said base, said intermediate shaftbeing connected to the motor shaft by speed reduction mechanism, intermittently operated mechanism for turning said traction means, said intermediate shaft having a cam for operating said intermittent mechanism, a pinking knife mounted on said base for vertical reciprocating movement, said pinking knife being connected to said intermediate shaft and being operated thereby, a presser-foot mounted upon said base for vertical reciprocating movement, and mechanism operated by said intermediate shaft for moving said presser-foot in timed relation to said knife, so that the presser-foot is moved downwardly to operative position and the knife is then moved downwardly to perform the pinking operation, while the base is stationary.

7. A pinking device comprising a movable base, said base having traction means for moving the same, said base having a housing located thereon, said base also having a motor located thereon, said housing including an oil compartment, said motor having a shaft which projects into said compartment, speed reduction mechanism located in said compartment, an intermediate shaft located in said compartment and connected to said speed reduction mechanism, said intermediate shaft having a cam which is located in said compartment, a rod mounted for reciprocating movement on said base, said rod having an inner end which is located in said compartment and which abuts said cam, a spring mounted on ,said' rod and holding its inner end in engagement with said cam, a pawl mounted on the outer end of said rod, said traction means being mounted on a shaft which has a ratchet wheel which is adapted to cooperate with said pawl, so that the reciprocation of said, rod intermittently turns said traction means, said compartment having means for sealing the same, a combined crankand-cam member connected to said intermediate shaft and located external to said housing, a knife mounted for vertical reciprocating movement and located on said base, means connecting said knife and said combined member so that the turning of said combined member vertically reciprocates said knife, a presser-foot located on said base and mounted for vertical reciprocating movement, means connecting said presser-foot and the cam portion of said combined member, said mechanism being operative to actuate said base intermittently and to then lower said presser-foot and to then move the knife downwardly through its cutting stroke.

B. A pinking device comprising a movable base and means adapted to intermittently actuate the cent said throat plate, said suction device being adapted to 'remove waste material from said throat plate.

9. A pinking device comprising a movable base, means adapted to intermittently actuate said base, pinking mechanism mounted on said base,

means adapted to operate said pinking mechanism, said base having a throat plate which forms a part of said pinking mechanism,said base having a flap hinged thereto, said movable base having traction means whlchelevate the same above the level of the support upon which said base is mounted.

10. A pinking device comprising a movable base and means adapted to intermittently actuate the same, said base having a throat plate, said base also having a knife which is mounted for vertical reciprocating movement, said base having means for vertically reciprocating said knife, said knife having vertical planar walls which are inclined to each other and which are provided with bottom cutting edges, said edges meeting in a point, said cutting edges being concave.

11. A pinking device comprising a movable ,base, pinking mechanism mounted on said base,

a motor mounted upon said base and connected to said pinking mechanism to operate the same, mechanism for actuating said base intermittently, said actuating mechanism being connected to said motor so that the base is actuated between successive plnking operations, and means for locking said actuating mechanism intermediate the intermittent successive actuations of said actuating mechanism.

12. A pinking device comprising a movable base, pinking mechanism mounted on said base, a motor mounted upon said base, said pinking mechanism comprising a cutting knife which is guided to reciprocate in a vertical path, means connecting said motor to said cutting knife in order to vertically reciprocate the same, intermittently operating mechanism for actuating said base, and means connecting said intermittently operating mechanism to said motor for actuating said base between the cutting strokes of said knife, and locking mechanism for locking the base between the intermittent successive operations of said intermittently operating mechanism.

13. A plnking device comprising a movable base, pinking mechanism mounted on said base, a motor mounted upon said base, said pinking mechanism comprising a cutting knife which is guided to reciprocate in a vertical path, means connecting said motor to said cutting knife in order to vertically reciprocate the same, intermittently operating mechanism for actuating said I base and located below said motor, said connecting means including a turnable member located above said knife and connected to the shaft of said motor, and a link connecting said turnable member to a holder to which said cutting knife is connected.

GEORGE M. HOSKWITH. 

